where is my missing horsepower???aghhh
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12 Second Club
Joined: Sep 2005
Posts: 689
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From: kentucky
where is my missing horsepower???aghhh had my car dyno tune the other day on a dynojet and seems like everyone is saying my numbers are about 20 hp low .im curious whats your opinion guys and what may be causing it .car seems to run good im just got alil dissapointed when they say somthing is wrong i should have put down more anyway .here is my mod list with my dynograph,and and pic of the af ratio at 5900 rpm while they was making a pull .So does the Af look good guys or what just looking for input
1998 trans am M6
torquer v2 cam
BBk ssi intake
Flowtech long tube headers
2.5 inch x pipe with dual exhaust dumped
slp air lid
descreen maf
ngk tr55 plugs and msd 8.5wires
4.10gear
Stock heads and stock TB
1998 trans am M6
torquer v2 cam
BBk ssi intake
Flowtech long tube headers
2.5 inch x pipe with dual exhaust dumped
slp air lid
descreen maf
ngk tr55 plugs and msd 8.5wires
4.10gear
Stock heads and stock TB
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Joined: Nov 2005
Posts: 2,379
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That seems a lot off... full intake/exhaust netted me the numbers in the sig and I was still missing the underdrive pulley and running stock cam/heads...
If you hadn't mentioned it, I'd say that WAS a stock heads/cam dyno with intake/exhaust...
If you hadn't mentioned it, I'd say that WAS a stock heads/cam dyno with intake/exhaust...
Power peak looks too late for some strange reason. Did you use a fresh chain when you installed your cam? Was it degreed in? Is there any advance ground into your cam? I only ask because the rpm of your torque and power peaks are much higher than that cam should have. I suspect a retarded intake centerline which can lower your dynamic compression and lower your overall power.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Thread Starter
12 Second Club
Joined: Sep 2005
Posts: 689
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From: kentucky
we put new timing chain in when we did it i went with just new factory one didnt get the double roller,the cam is a @112.0 icl and i instald the cam dot to dot.I was very taking off guard by the numbers as well .Im willing to give any info i can to help try to figure this out guys.What ever you need to know message me on here or even on yahoo chris_kchs@yahoo.com.I think i should have at least put down 375-380 with my setup
Thread Starter
12 Second Club
Joined: Sep 2005
Posts: 689
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From: kentucky
Here is the cam card that came with it i dont belive it has any advance ground into the cam i asked for a 112lca and instaled the cam dot to dot like i use to instal all my other cams .Did i do somthing wrong in the install ,and no i didnt degree the cam when i installed it i didnt have all the tools to do the degreeing.So patrick what you think may be the Culprit here im lost
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From: Bensalem, Pa, now montreal, Quebec
I don't see that you have an UD pulley and your running 4.10s. Im sure that could be easily 10-15rwhp there. I mean the tq if anything seems a bit low. How much power do you typically gain from that cam from boltons? The dyno could have been off a bit as well. From 2 different dynos, my car showed a 20rwhp difference with the same mods within a 2month timespan.